Job description

US Citizens or GC Holders only - Direct-Hire Local candidates only Onsite- 4-5 days per week We're hiring a mid-to-senior .NET Developer for an onsite contract role in St. Louis. The right candidate is comfortable across the full Microsoft stack — .NET, SQL Server, and ASP.NET — and can plug into an existing environment and contribute quickly. Experience with Microsoft Dynamics GP (Great Plains) is a strong plus but not required. Responsibilities: • Design, develop, and maintain applications using .NET, C#, and ASP.NET • Build, optimize, and tune SQL Server databases — T-SQL, stored procedures, views, performance tuning • Support and enhance existing web applications and internal tools • Translate business requirements into clean, maintainable technical solutions • Troubleshoot, debug, and resolve production issues across the stack • Integrate with internal systems and third-party APIs as needed • Where applicable, support or extend Dynamics GP customizations, integrations, or reporting Required: • 5+ years of professional .NET development (.NET Framework and/or .NET Core) • Strong C# and ASP.NET (Web Forms and/or MVC) • Solid SQL Server experience — T-SQL, stored procedures, query optimization • Full SDLC experience — requirements, design, development, testing, deployment • Strong communication skills; comfortable with technical and non-technical stakeholders • Able to work fully onsite in St. Louis, MO Preferred: • Microsoft Dynamics GP (Great Plains) — customizations, integrations, or reporting • ASP.NET MVC, Web API, or .NET Core • Front-end familiarity (JavaScript, jQuery, Bootstrap, Razor) • Source control with Git, TFS, or Azure DevOps • Reporting tools — SSRS, Crystal Reports, or Power BI

Requirements

Must-haves

US Citizens or GC Holders only - Direct-Hire
Local candidates only
Onsite- 4-5 days per week
Design, develop, and maintain applications using .NET, C#, and ASP.NET
Build, optimize, and tune SQL Server databases — T-SQL, stored procedures, views, performance tuning
Support and enhance existing web applications and internal tools
Translate business requirements into clean, maintainable technical solutions
Troubleshoot, debug, and resolve production issues across the stack
Integrate with internal systems and third-party APIs as needed
Where applicable, support or extend Dynamics GP customizations, integrations, or reporting
5+ years of professional .NET development (.NET Framework and/or .NET Core)
Strong C# and ASP.NET (Web Forms and/or MVC)
Solid SQL Server experience — T-SQL, stored procedures, query optimization
Full SDLC experience — requirements, design, development, testing, deployment
Strong communication skills; comfortable with technical and non-technical stakeholders
Able to work fully onsite in St. Louis, MO

Nice-to-haves

Microsoft Dynamics GP (Great Plains) — customizations, integrations, or reporting
ASP.NET MVC, Web API, or .NET Core
Front-end familiarity (JavaScript, jQuery, Bootstrap, Razor)
Source control with Git, TFS, or Azure DevOps
Reporting tools — SSRS, Crystal Reports, or Power BI

Application prep

Use the role’s language and application details while tailoring your materials.

Keywords to mirror

sqlapijavascriptazure

Platform: catsone
Effort: medium